Improvement in bearings for distributing-rollers of printing-presses



B. POTTER, lr & i. F. HUBBARD. Be'a rings for Distributing Rollers ofPrinting Presses.

Patented Oct. 26,1875.

Nv PEPERS, FHOTO-LITHOGRAPNER, WASHINGTON. D C.

UNITED STATES PATENT QFFICE.

CHARLES roTTEE, JR, AND JAMES F. HUBBARD, OF PLAINFIELD, N. J.

IMPROVEMENT IN BEARINGS FOR DISTRIBUTING-ROLLERS 0F PRINTING-PRESSES.

Specification forming part of Letters Patent No. 169,191, dated October26, 1875; application filed February 23, 1875.

CASE B.

To all whom it may concern:

Be it known that we, CHARLES POTTER, Jr., and JAMES F. HUBBARD, both ofPlainfield, Union county, New Jersey, have invented certain new anduseful Improvements relative to Bearings for Distributing-Rollers ofPrinting-Presses, of which the following'is a specification:

We have, in the course of a long experience in the manufacture ofprinting-presses, discovered and successfully put in practice means bywhich the journals of what is known as the vibrating distributer are soheld that this roller, while it is firmly held down during a temporaryremoval of the upper rolls, may be easily and quickly removed from, andreplaced in, its bearings.

As an improvement upon the usual pipebearing, the removal of the rollerfrom which necessitated a tedious operation of unscrewin g, unshipping,and, subsequent retightening and adjusting, the simplest of severalmethods has been to set the journals loosely in the housings or verticaljaws, one distributingroller over the other. The upper rolls are in suchcase easily removable; but the objection is insurmountable that thevibrating distributer is held down only by the use of objectionableadditions when the upper rollers are removed. It is necessary to hold itdown firmly to allow of the working of the gearing, which unavoidablytends to elevate the distributing-rolls.

To obviate all difficulties we make the housing, which carries the twosmall upper distributing-rolls, a part of the hinged journalbox of thevibrating distributer. This we accomplish by hinging the housing to thejournal-bed, and securing it by a clamp, hinged, turning up into a slot,and secured by a compressing or thumb screw.

The accompanying drawings form a part of this specification, and aid indescribing what we consider the best means of carrying out ourinvention.

' The same parts are shown by the same letters throughout.

Figure 1 is a front view of the bed-plate'and rollers of one of ourimproved printing-presses. Fig. 2 is a side view of one of our improvedbearings for distributing-rollers.

Diagram A is a side view of one of the common housing-bearings.

B B B are parts of the frame. 0 is the bedplate, which reciprocates, itsfriction-rollers beneath. (Not shown.) D D are inking-rollers. E E aresmall rolls. F is the vibrating distributer; F, its axle; H, a commonhousing; 1, our improved housing andbearing combined; J, the telescopicor sleeve lever; K, the rocking shaft; L, the vibrating lever. Bearingsare shown at a a a; the bed-plate of the housing-bearing at 1); itsupper piece or jaw c hinged at d, and retained by the compression-screwe, which, is hinged at f, and shuts into the slot g. The cam-head of therocking shaft is shown at h, with its wormthread or slot j, the lever Lbeing pivoted at k, and playing, by the pin Z, in the groove m of theroller-axle F.

We do not claim the hinged binder and confining means except when thesame forms also a housing for rollers above, which housing is raised andreplaced therewith; but

We claim as our invention- In combination with the inking-rolls D D anddistributing-rollF, with one or more rolls mounted above and pressingupon the latter, the hinged housing or jaw c d, and its confining means0, serving both as a loose guide and support for the upper roller orrollers, and a firm and readily-releasable box for the journal of thedistributing-roll F, substantially as herein specified.

In testimony whereof we have hereunto set our hands this 18th'day ofFebruary, 1875, in the presence of two subscribing witnesses.

c. POTTER, JR. JAMES F. HUBBARD.

Witnesses:

THOMAS D. STETsoN, J OHN BUOKINGHAM.

